★15pcs 1/4" carbon carbide shank router bits with wooden case(Note: the size shown on the picture is mm not inch). ★ High-grade tungsten carbide blades can be re-sharpened,sealed bearings for smooth rotation and accurate cuts. ★ WARM TIPS: Please always notice to add some Coolant ( like water) when operating, the temperature of material will get high or get smoke because of long time operating. 15 piece router bits: 1 x "V" Type Slotting Cutter 12.7mm 1 x Cove Box Bit - R3.2mm 1 x Cove Bit - R6.3mm 1 x Dovetail Bit 12.7mm 1 x Traight Bit 6mm 1 x Traight Bit 12mm 1 x Traight Bit 12.7mm 1 x Traight Bit 16mm 1 x Corner Round - R9.5mm 1 x Straight Bit 3mm 1 x 45°Chamfer 29mm 1 x Panel Pilot Bit 6.4mm 1 x Cove Bit - R6.3mm 1 x Straight Bit 12.7mm 1 x Roman Ogee - R4mm